# PAR1

# QUIZ1
# def filelinelen():
#     SIZE=100000
#     with open('Walden.txt','r',encoding='utf-8') as cl:
#         while True:
#             str1 = cl.read(SIZE).splitlines()
#             if str1:
#                 yield str1
#             else:
#                 return
# r= filelinelen()
# temp=0
# for i in r:
#     for w in i:
#         if len(w)>temp:
#             temp=len(w)
# print(temp)


# PART2

#  QUIZ1
# import datetime
# d1=datetime.date(int(input("input year:")),int(input("input month:")),int(input("input day:")))
# d2=datetime.date(int(input("input year:")),int(input("input month:")),int(input("input day:")))
# print("{0}days".format(abs((d1-d2)).days))

# QUIZ2
# import datetime
# n=int(input("input :"))
# print(datetime.date.today()-datetime.timedelta(n))

# QUIZ3
# import os
# def getsize(dir):
#     size=0
#     for root, dirs, files in os.walk(dir):
#         size+=sum([os.path.getsize(os.path.join(root, name)) for name in files])
#     return size
# print("{0} Mb".format(round(getsize(os.getcwd())/1024/1024,2)))